Mobile device and optical imaging lens thereof

ABSTRACT

Present embodiments provide for mobile devices and optical imaging lenses thereof. An optical imaging lens may include five lens elements positioned sequentially from an object side to an image side. By controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least one inequality, the optical imaging lens may exhibit better optical characteristics and the total length of the optical imaging lens may be shortened.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to P.R.C. Patent Application No.2016105525306, titled “Mobile device and optical imaging lens thereof”,filed Jul. 14, 2016, with the State Intellectual Property Office of thePeople's Republic of China (SIPO).

TECHNICAL FIELD

The present disclosure relates to a mobile device and an optical imaginglens thereof, and particularly, relates to a mobile device applying anoptical imaging lens having five lens elements and an optical imaginglens thereof.

BACKGROUND

The ever-increasing demand for smaller sized mobile devices, such ascell phones, digital cameras, tablet computers, personal digitalassistants (PDAs), etc. has triggered a growing need for smaller sizedphotography modules, comprising elements such as an optical imaginglens, a module housing unit, and an image sensor, etc., containedtherein. Size reductions may be achieved from various aspects of themobile devices, which may include not only the charge coupled device(CCD) and the complementary metal-oxide semiconductor (CMOS), but alsothe optical imaging lens mounted therein. When reducing the size of theoptical imaging lens, however, achieving good optical characteristicsmay become a challenging problem. Furthermore, high view angle andimproved aperture size are important for applying a photography modulein vehicles.

In light of the above issues, when designing an optical imaging lenswith a shorter length, reducing the size of each element thereinproportionally is not a simple task. Additional factors, such asmaterial nature, production difficulty, assembly yield, and so forth arecrucial to the application of the design. Accordingly, there is a needfor providing optical imaging lenses having five lens elements, whichalso feature reduced length as well as good optical characteristics.

SUMMARY

The present disclosure provides for mobile devices and optical imaginglenses thereof. By controlling the convex or concave shape of thesurfaces and at least one inequality, the length of the optical imaginglens may be shortened while providing good optical characteristics andsustaining system functionality.

In an example embodiment, an optical imaging lens may comprise,sequentially from an object side to an image side along an optical axis,first, second, third, fourth and fifth lens elements, each of the first,second, third, fourth and fifth lens elements having refracting power,an object-side surface facing toward the object side and an image-sidesurface facing toward the image side and a central thickness definedalong the optical axis.

In the specification, parameters used here are: the central thickness ofthe first lens element, represented by T1, an air gap between the firstlens element and the second lens element along the optical axis,represented by G1, the distance between the aperture stop and theobject-side surface of the next lens element along the optical axis,represented by TA, the central thickness of the second lens element,represented by T2, an air gap between the second lens element and thethird lens element along the optical axis, represented by G2, thecentral thickness of the third lens element, represented by T3, an airgap between the third lens element and the fourth lens element along theoptical axis, represented by G3, the central thickness of the fourthlens element, represented by T4, an air gap between the fourth lenselement and the fifth lens element along the optical axis, representedby G4, the central thickness of the fifth lens element, represented byT5, a distance between the image-side surface of the fifth lens elementand the object-side surface of a filtering unit along the optical axis,represented by G5, the central thickness of the filtering unit along theoptical axis, represented by TF, a distance between the image-sidesurface of the filtering unit and an image plane along the optical axis,represented by GFP, a focusing length of the first lens element,represented by f1, a focusing length of the second lens element,represented by f2, a focusing length of the third lens element,represented by f3, a focusing length of the fourth lens element,represented by f4, a focusing length of the fifth lens element,represented by f5, the refracting power of the first lens element,represented by n1, the refracting power of the second lens element,represented by n2, the refracting power of the third lens element,represented by n3, the refracting power of the fourth lens element,represented by n4, the refracting power of the fifth lens element,represented by n5, the refracting power of the filtering unit,represented by nf, an abbe number of the first lens element, representedby v1, an abbe number of the second lens element, represented by v2, anabbe number of the third lens element, represented by v3, an abbe numberof the fourth lens element, represented by v4, an abbe number of thefifth lens element, represented by v5, an effective focal length of theoptical imaging lens, represented by EFL, a distance between theobject-side surface of the first lens element and an image-side surfaceof the fifth lens element along the optical axis, represented by TL, adistance between the object-side surface of the first lens element andan image plane along the optical axis, represented by TTL, a sum of thecentral thicknesses of all five lens elements, i.e. a sum of T1, T2, T3,T4 and T5, represented by ALT, a sum of all four air gaps from the firstlens element to the fifth lens element along the optical axis, i.e. asum of G1, G2, G3 and G4, represented by AAG, and a back focal length ofthe optical imaging lens, which is defined as the distance from theimage-side surface of the fifth lens element to the image plane alongthe optical axis, i.e. a sum of G5, TF and GFP, and represented by BFL.

In an aspect of the present disclosure, in the optical imaging lens, theimage-side surface of the first lens element comprises a concave portionin a vicinity of the optical axis, the image-side surface of the secondlens element comprises a concave portion in a vicinity of a periphery ofthe second lens element, the object-side surface of the third lenselement comprises a concave portion in a vicinity of the optical axis,the object-side surface of the fourth lens element comprises a convexportion in a vicinity of a periphery of the fourth lens element, and theimage-side surface of the fourth lens element comprises a concaveportion in a vicinity of the periphery of the fourth lens element, thefifth lens element is constructed by plastic material, the opticalimaging lens may comprise no other lenses having refracting power beyondthe five lens elements, and TL, G2, G3 and G4 satisfy the inequality:6.4≤TL/(G2+G3+G4)  Inequality (1).

In other example embodiment(s), other inequality(s), such as thoserelating to the ratio among various additional parameters, could betaken into consideration. For example:ALT/(G3+T2+T4)≤4.2  Inequality (2);TL/(G3+T2)≤10.1  Inequality (3);ALT/(G3+G1)≤5.7  Inequality (4);AAG/(G3+G2)≤2.7  Inequality (5);G1/T1≤1.4  Inequality (6);TTL/T3≤7.8  Inequality (7);TTL/G2≤13  Inequality (8);TTL/AAG≤4.7  Inequality (9);T5/G2≤4.1  Inequality (10);T5/T3≤1.4  Inequality (11);T5/G1≤1.4  Inequality (12);T5/BFL≤1.2  Inequality (13);BFL/(G3+G2)≤2  Inequality (14);T5/T2≤2.6  Inequality (15);ALT/(G3+T4)≤8.8  Inequality (16);T5/T1≤2.2  Inequality (17);T3/G2≤3.3  Inequality (18); and/orBFL/T3≤1.3  Inequality (19).

The above example embodiments are not limited and could be selectivelyincorporated in other embodiments described herein.

In another example embodiment, a mobile device comprising a housing anda photography module positioned in the housing is provided. Thephotography module may comprise any of described example embodiments ofoptical imaging lens, a lens barrel, a module housing unit, and an imagesensor. The lens barrel may be for positioning the optical imaging lens,the module housing unit may be for positioning the lens barrel and theimage sensor may be positioned at the image side of the optical imaginglens.

Through controlling the convex or concave shape of the surfaces and atlease one inequality, among other parameters, the mobile device and theoptical imaging lens thereof in example embodiments achieves goodoptical characteristics and effectively shortens the length of theoptical imaging lens.

BRIEF DESCRIPTION OF THE DRAWINGS

Example embodiments will be more readily understood from the followingdetailed description when read in conjunction with the appendeddrawings, in which:

FIG. 1 is a cross-sectional view of one single lens element according tothe present disclosure;

FIG. 2 is a cross-sectional view showing the relation between the shapeof a portion and the position where a collimated ray meets the opticalaxis;

FIG. 3 is a cross-sectional view showing the relation between the shapeof a portion and the effective radius of a first example;

FIG. 4 is a cross-sectional view showing the relation between the shapeof a portion and the effective radius of a second example;

FIG. 5 is a cross-sectional view showing the relation between the shapeof a portion and the effective radius of a third example;

FIG. 6 is a cross-sectional view of a first embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 7 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a first embodiment of the optical imaging lensaccording to the present disclosure;

FIG. 8 is a table of optical data for each lens element of a firstembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 9 is a table of aspherical data of a first embodiment of theoptical imaging lens according to the present disclosure;

FIG. 10 is a cross-sectional view of a second embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 11 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a second embodiment of the optical imaginglens according to the present disclosure;

FIG. 12 is a table of optical data for each lens element of the opticalimaging lens of a second embodiment of the present disclosure;

FIG. 13 is a table of aspherical data of a second embodiment of theoptical imaging lens according to the present disclosure;

FIG. 14 is a cross-sectional view of a third embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 15 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a third embodiment of the optical imaging lensaccording the present disclosure;

FIG. 16 is a table of optical data for each lens element of the opticalimaging lens of a third embodiment of the present disclosure;

FIG. 17 is a table of aspherical data of a third embodiment of theoptical imaging lens according to the present disclosure;

FIG. 18 is a cross-sectional view of a fourth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 19 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a fourth embodiment of the optical imaginglens according the present disclosure;

FIG. 20 is a table of optical data for each lens element of the opticalimaging lens of a fourth embodiment of the present disclosure;

FIG. 21 is a table of aspherical data of a fourth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 22 is a cross-sectional view of a fifth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 23 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a fifth embodiment of the optical imaging lensaccording the present disclosure;

FIG. 24 is a table of optical data for each lens element of the opticalimaging lens of a fifth embodiment of the present disclosure;

FIG. 25 is a table of aspherical data of a fifth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 26 is a cross-sectional view of a sixth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 27 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a sixth embodiment of the optical imaging lensaccording the present disclosure;

FIG. 28 is a table of optical data for each lens element of the opticalimaging lens of a sixth embodiment of the present disclosure;

FIG. 29 is a table of aspherical data of a sixth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 30 is a cross-sectional view of a seventh embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 31 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a seventh embodiment of the optical imaginglens according to the present disclosure;

FIG. 32 is a table of optical data for each lens element of a seventhembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 33 is a table of aspherical data of a seventh embodiment of theoptical imaging lens according to the present disclosure;

FIG. 34 is a cross-sectional view of an eighth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 35 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of an eighth embodiment of the optical imaginglens according to the present disclosure;

FIG. 36 is a table of optical data for each lens element of the opticalimaging lens of an eighth embodiment of the present disclosure;

FIG. 37 is a table of aspherical data of an eighth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 38 is a cross-sectional view of a ninth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 39 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a ninth embodiment of the optical imaging lensaccording to the present disclosure;

FIG. 40 is a table of optical data for each lens element of a ninthembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 41 is a table of aspherical data of a ninth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 42 is a cross-sectional view of a tenth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 43 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a tenth embodiment of the optical imaging lensaccording to the present disclosure;

FIG. 44 is a table of optical data for each lens element of the opticalimaging lens of a tenth embodiment of the present disclosure;

FIG. 45 is a table of aspherical data of a tenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 46 is a cross-sectional view of an eleventh embodiment of anoptical imaging lens having five lens elements according to the presentdisclosure;

FIG. 47 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of an eleventh embodiment of the optical imaginglens according the present disclosure;

FIG. 48 is a table of optical data for each lens element of the opticalimaging lens of an eleventh embodiment of the present disclosure;

FIG. 49 is a table of aspherical data of an eleventh embodiment of theoptical imaging lens according to the present disclosure;

FIG. 50 is a cross-sectional view of a twelfth embodiment of an opticalimaging lens having five lens elements according to the presentdisclosure;

FIG. 51 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a twelfth embodiment of the optical imaginglens according the present disclosure;

FIG. 52 is a table of optical data for each lens element of the opticalimaging lens of a twelfth embodiment of the present disclosure;

FIG. 53 is a table of aspherical data of a twelfth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 54 is a cross-sectional view of a thirteenth embodiment of anoptical imaging lens having five lens elements according to the presentdisclosure;

FIG. 55 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a thirteenth embodiment of the optical imaginglens according the present disclosure;

FIG. 56 is a table of optical data for each lens element of the opticalimaging lens of a thirteenth embodiment of the present disclosure;

FIG. 57 is a table of aspherical data of a thirteenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 58 is a cross-sectional view of a fourteenth embodiment of anoptical imaging lens having five lens elements according to the presentdisclosure;

FIG. 59 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a fourteenth embodiment of the optical imaginglens according the present disclosure;

FIG. 60 is a table of optical data for each lens element of the opticalimaging lens of a fourteenth embodiment of the present disclosure;

FIG. 61 is a table of aspherical data of a fourteenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 62 is a cross-sectional view of a fifteenth embodiment of anoptical imaging lens having five lens elements according to the presentdisclosure;

FIG. 63 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a fifteenth embodiment of the optical imaginglens according to the present disclosure;

FIG. 64 is a table of optical data for each lens element of a fifteenthembodiment of an optical imaging lens according to the presentdisclosure;

FIG. 65 is a table of aspherical data of a fifteenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 66 is a cross-sectional view of a sixteenth embodiment of anoptical imaging lens having five lens elements according to the presentdisclosure;

FIG. 67 is a chart of longitudinal spherical aberration and other kindsof optical aberrations of a sixteenth embodiment of the optical imaginglens according to the present disclosure;

FIG. 68 is a table of optical data for each lens element of the opticalimaging lens of a sixteenth embodiment of the present disclosure;

FIG. 69 is a table of aspherical data of a sixteenth embodiment of theoptical imaging lens according to the present disclosure;

FIG. 70A is a table for the values of T1, G1, T2, G2, T3, G3, T4, G4,T5, G5, TF, GFP, TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4),TL/(G3+T2), ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG,T5/G2, T5/T3, T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1,T3/G2 and BFL/T3 of the first to eighth example embodiments;

FIG. 70B is a table for the values of T1, G1, T2, G2, T3, G3, T4, G4,T5, G5, TF, GFP, TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4),TL/(G3+T2), ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG,T5/G2, T5/T3, T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1,T3/G2 and BFL/T3 of the ninth to sixteenth example embodiments;

FIG. 71 is a structure of an example embodiment of a mobile device;

FIG. 72 is a partially enlarged view of the structure of another exampleembodiment of a mobile device.

DETAILED DESCRIPTION

For a more complete understanding of the present disclosure and itsadvantages, reference is now made to the following description taken inconjunction with the accompanying drawings, in which like referencenumbers indicate like features. Persons having ordinary skill in the artwill understand other varieties for implementing example embodiments,including those described herein. The drawings are not limited tospecific scale and similar reference numbers are used for representingsimilar elements. As used in the disclosures and the appended claims,the terms “example embodiment,” “exemplary embodiment,” and “presentembodiment” do not necessarily refer to a single embodiment, although itmay, and various example embodiments may be readily combined andinterchanged, without departing from the scope or spirit of the presentdisclosure. Furthermore, the terminology as used herein is for thepurpose of describing example embodiments only and is not intended to bea limitation of the disclosure. In this respect, as used herein, theterm “in” may include “in” and “on”, and the terms “a”, “an” and “the”may include singular and plural references. Furthermore, as used herein,the term “by” may also mean “from”, depending on the context.Furthermore, as used herein, the term “if” may also mean “when” or“upon”, depending on the context. Furthermore, as used herein, the words“and/or” may refer to and encompass any and all possible combinations ofone or more of the associated listed items.

In the present disclosure, the description “a lens element havingpositive refracting power (or negative refracting power)” means that theparaxial refracting power of the lens element in Gaussian optics ispositive (or negative). The description “An object-side (or image-side)surface of a lens element” only includes a specific region of thatsurface of the lens element where imaging rays are capable of passingthrough that region, namely the clear aperture of the surface. Theaforementioned imaging rays can be classified into two types, chief rayLc and marginal ray Lm. Taking a lens element depicted in FIG. 1 as anexample, the lens element is rotationally symmetric, where the opticalaxis I is the axis of symmetry. The region A of the lens element isdefined as “a portion in a vicinity of the optical axis”, and the regionC of the lens element is defined as “a portion in a vicinity of aperiphery of the lens element”. Besides, the lens element may also havean extending portion E extended radially and outwardly from the regionC, namely the portion outside of the clear aperture of the lens element.The extending portion E is usually used for physically assembling thelens element into an optical imaging lens system. Under normalcircumstances, the imaging rays would not pass through the extendingportion E because those imaging rays only pass through the clearaperture. The structures and shapes of the aforementioned extendingportion E are only examples for technical explanation, the structuresand shapes of lens elements should not be limited to these examples.Note that the extending portions of the lens element surfaces depictedin the following embodiments are partially omitted.

The following criteria are provided for determining the shapes and theportions of lens element surfaces set forth in the present disclosure.These criteria mainly determine the boundaries of portions under variouscircumstances including the portion in a vicinity of the optical axis,the portion in a vicinity of a periphery of a lens element surface, andother types of lens element surfaces such as those having multipleportions.

FIG. 1 depicts a radial cross-sectional view of a lens element. Beforedetermining boundaries of those aforesaid portions, two referentialpoints should be defined first, central point and transition point. Thecentral point of a surface of a lens element is a point of intersectionof that surface and the optical axis. The transition point is a point ona surface of a lens element, where the tangent line of that point isperpendicular to the optical axis. Additionally, if multiple transitionpoints appear on one single surface, then these transition points aresequentially named along the radial direction of the surface withnumbers starting from the first transition point. For instance, thefirst transition point (closest one to the optical axis), the secondtransition point, and the Nth transition point (farthest one to theoptical axis within the scope of the clear aperture of the surface). Theportion of a surface of the lens element between the central point andthe first transition point is defined as the portion in a vicinity ofthe optical axis. The portion located radially outside of the Nthtransition point (but still within the scope of the clear aperture) isdefined as the portion in a vicinity of a periphery of the lens element.In some embodiments, there may be other portions existing between theportion in a vicinity of the optical axis and the portion in a vicinityof a periphery of the lens element; the numbers of portions may dependon the numbers of the transition point(s). In addition, the radius ofthe clear aperture (or a so-called effective radius) of a surface may bedefined as the radial distance from the optical axis I to a point ofintersection of the marginal ray Lm and the surface of the lens element.

Referring to FIG. 2, determining whether the shape of a portion may beconvex or concave depends on whether a collimated ray passing throughthat portion converges or diverges. That is, while applying a collimatedray to a portion to be determined in terms of shape, the collimated raypassing through that portion will be bended and the ray itself or itsextension line will eventually meet the optical axis. The shape of thatportion may be determined by whether the ray or its extension line meets(intersects) the optical axis (focal point) at the object-side orimage-side. For instance, if the ray itself intersects the optical axisat the image side of the lens element after passing through a portion,i.e. the focal point of this ray is at the image side (see point R inFIG. 2), the portion may be determined as having a convex shape. Incontrast, if the ray diverges after passing through a portion, theextension line of the ray intersects the optical axis at the object sideof the lens element, i.e. the focal point of the ray is at the objectside (see point M in FIG. 2), that portion will be determined as havinga concave shape. Therefore, referring to FIG. 2, the portion between thecentral point and the first transition point may have a convex shape,the portion located radially outside of the first transition point mayhave a concave shape, and the first transition point is the point wherethe portion having a convex shape changes to the portion having aconcave shape, namely the border of two adjacent portions.Alternatively, there may be another common way for a person withordinary skill in the art to tell whether a portion in a vicinity of theoptical axis has a convex or concave shape by referring to the sign ofan “R” value, which is the (paraxial) radius of curvature of a lenssurface. The R value which is commonly used in conventional opticaldesign software such as Zemax and CodeV. The R value usually appears inthe lens data sheet in the software. For an object-side surface,positive R means that the object-side surface is convex, and negative Rmeans that the object-side surface is concave. Conversely, for animage-side surface, positive R means that the image-side surface isconcave, and negative R means that the image-side surface is convex. Theresult found by using this method should be consistent as by using theother way mentioned above, which determines surface shapes by referringto whether the focal point of a collimated ray is at the object side orthe image side.

For none transition point cases, the portion in a vicinity of theoptical axis is defined as the portion between 0˜50% of the effectiveradius (radius of the clear aperture) of the surface, whereas theportion in a vicinity of a periphery of the lens element is defined asthe portion between 50˜100% of effective radius (radius of the clearaperture) of the surface.

Referring to the first example depicted in FIG. 3, only one transitionpoint, namely a first transition point, may appear within the clearaperture of the image-side surface of the lens element. Portion I may bea portion in a vicinity of the optical axis, and portion II may be aportion in a vicinity of a periphery of the lens element. The portion ina vicinity of the optical axis may be determined as having a concavesurface due to the R value at the image-side surface of the lens elementis positive. The shape of the portion in a vicinity of a periphery ofthe lens element may be different from that of the radially inneradjacent portion, i.e. the shape of the portion in a vicinity of aperiphery of the lens element is different from the shape of the portionin a vicinity of the optical axis; the portion in a vicinity of aperiphery of the lens element has a convex shape.

Referring to the second example depicted in FIG. 4, a first transitionpoint and a second transition point may exist on the object-side surface(within the clear aperture) of a lens element, in which portion I may bethe portion in a vicinity of the optical axis, and portion III may bethe portion in a vicinity of a periphery of the lens element. Theportion in a vicinity of the optical axis may have a convex shapebecause the R value at the object-side surface of the lens element maybe positive. The portion in a vicinity of a periphery of the lenselement (portion III) may have a convex shape. What is more, there maybe another portion having a concave shape existing between the first andsecond transition point (portion II).

Referring to a third example depicted in FIG. 5, no transition pointexists on the object-side surface of the lens element. In this case, theportion between 0˜50% of the effective radius (radius of the clearaperture) is determined as the portion in a vicinity of the opticalaxis, and the portion between 50˜100% of the effective radius isdetermined as the portion in a vicinity of a periphery of the lenselement. The portion in a vicinity of the optical axis of theobject-side surface of the lens element is determined as having a convexshape due to its positive R value, and the portion in a vicinity of aperiphery of the lens element is determined as having a convex shape aswell.

The optical imaging lens of the present disclosure may be a prime lens.The optical imaging lens may comprise a first lens element, a secondlens element, a third lens element, a fourth lens element and a fifthlens element. Additionally, each of the lens elements may compriserefracting power, an object-side surface facing toward an object side,an image-side surface facing toward an image side, and a centralthickness defined along the optical axis. These lens elements may bearranged sequentially from the object side to the image side along anoptical axis, and example embodiments of the lens may comprise no otherlenses having refracting power beyond the five lens elements. In anexample embodiment: the image-side surface of the first lens element maycomprise a concave portion in a vicinity of the optical axis, theimage-side surface of the second lens element may comprise a concaveportion in a vicinity of a periphery of the second lens element, theobject-side surface of the third lens element may comprise a concaveportion in a vicinity of the optical axis, the object-side surface ofthe fourth lens element may comprise a convex portion in a vicinity of aperiphery of the fourth lens element, and the image-side surface of thefourth lens element may comprise a concave portion in a vicinity of theperiphery of the fourth lens element, the fifth lens element isconstructed by plastic material, and the optical imaging lens maycomprise no other lenses having refracting power beyond the five lenselements.

The lens elements may be designed in light of the opticalcharacteristics and the length of the optical imaging lens. For example,the concave portion in a vicinity of the optical axis formed on theimage-side surface of the first lens element may assist in collectinglight with great incident angle, and the concave portion in a vicinityof a periphery of the second lens element formed on the image-sidesurface thereof may assist in adjusting abberations for the whole andpartial image. Together with the concave portion in a vicinity of theoptical axis formed on the object-side surface of the third lenselement, the convex portion in a vicinity of a periphery of the fourthlens element formed on the object-side surface thereof and the concaveportion in a vicinity of the periphery of the fourth lens element formedon the image-side surface thereof, the quality of the image may bepromoted effectively. Through applying parts or all of each of theaforesaid designs in various implementations, the length of the opticalimaging lens may be reduced while enhancing aspects of the imagingquality, such as clarity of the image.

Additionally, values of parameters may be controlled to assist indesigning optical imaging lenses with good optical characters and ashort length. To shorten the length of the optical imaging lens, thethickness of the lens elements and/or the air gaps between the lenselements may be used for shorter distances; however, considering boththe difficulty to assemble the optical imaging lens and imaging quality,the optical imaging lens may be better configured if it satisfies:6.4≤TL/(G2+G3+G4), and the value of TL/(G2+G3+G4) may be within about6.4˜10.1; ALT/(G3+T2+T4)≤4.2, and the value of ALT/(G3+T2+T4) may bewithin 0.8˜4.2; TL/(G3+T2)≤10.1, and the value of TL/(G3+T2) may bewithin about 2.9˜10.1; ALT/(G3+G1)≤5.7, and the value of ALT/(G3+G1) maybe within about 0.6˜5.7; AAG/(G3+G2)≤2.7, and the value of AAG/(G3+G2)may be within about 1.1˜2.7; G1/T1≤1.4, and the value of G1/T1 may bewithin about 0.08˜1.4; BFL/(G3+G2)≤2, and the value of BFL/(G3+G2) maybe within about 0.4˜2; ALT/(G3+T4)≤8.8, and the value of ALT/(G3+T4) maybe within about 1˜8.8.

Controlling the parameters following this manner may assist in keepingthe ratio of the effective focal length to the length of the opticalimaging lens proper, i.e. avoiding an excessively small valueunfavorable to forming a clear image for an object far away from theoptical imaging lens, or an excessively large value resulting in alengthy optical imaging lens. The optical imaging lens may be betterconfigured if it satisfies: TTL/T3≤7.8, and the value of TTL/T3 may bewithin about 2.8˜7.8; TTL/G2≤13, and the value of TTL/G2 may be withinabout 5.4˜13; TTL/AAG≤4.7, and the value of TTL/AAG may be within about1.7˜4.7.

Controlling the parameters which limit relations between the thicknessof the fifth lens element and the thicknesses of other lens elements orair gaps in the following manner may assist in controlling the thicknessof the fifth lens element to avoid from an excessive small or largevalue and reduce aberration which occurs between the first to fourthlens elements. The optical imaging lens may be better configured if itsatisfies: T5/G2≤4.1, and the value of T5/G2 may be within about0.2˜4.1; T5/T3≤1.4, and the value of T5/T3 may be within about 0.5˜1.4;T5/G1≤1.4, and the value of T5/G1 may be within about 0.1˜1.4;T5/BFL≤1.2, and the value of T5/BFL may be within about 0.1˜1.2;T5/T2≤2.6, and the value of T5/T2 may be within about 0.1˜2.6;T5/T1≤2.2, and the value of T5/T1 may be within about 0.1˜2.2.

Controlling the parameters which limit relations between the thicknessof the third lens element and the thickness of other lens element or airgap in the following manner may assist in controlling the thickness ofthe third lens element to avoid an excessively small or large value andreduce aberration which occurs between the first to second lenselements. The optical imaging lens may be better configured if itsatisfies: T3/G2≤3.3, and the value of T3/G2 may be within about0.3˜3.3; BFL/T3≤1.3, and the value of BFL/T3 may be within about0.4˜1.3.

In light of the unpredictability in an optical system, in the presentdisclosure, satisfying the inequalities listed above may advantageouslyshorten the length of the optical imaging lens, lower the f-number,enlarge the shot angle, promote the imaging quality and/or increase theyield in the assembly process.

When implementing example embodiments, more details about the convex orconcave surface could be incorporated for one specific lens element orbroadly for plural lens elements to enhance the control for the systemperformance and/or resolution, or promote the yield. It is noted thatthe details listed here could be incorporated in example embodiments ifno inconsistency occurs.

Several example embodiments and associated optical data will now beprovided for illustrating example embodiments of optical imaging lenseswith good optical characteristics, a wide view angle and a low f-number.Reference is now made to FIGS. 6-9. FIG. 6 illustrates an examplecross-sectional view of an optical imaging lens 1 having five lenselements of the optical imaging lens according to a first exampleembodiment. FIG. 7 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 1 according to an example embodiment. FIG. 8 illustrates an exampletable of optical data of each lens element of the optical imaging lens 1according to an example embodiment, in which f is used for representingEFL. FIG. 9 depicts an example table of aspherical data of the opticalimaging lens 1 according to an example embodiment.

As shown in FIG. 6, the optical imaging lens 1 of the present embodimentmay comprise, in order from an object side A1 to an image side A2 alongan optical axis, a first lens element 110, a second lens element 120, athird lens element 130, an aperture stop 100, a fourth lens element 140and a fifth lens element 150. A filtering unit 160 and an image plane170 of an image sensor are positioned at the image side A2 of theoptical lens 1. Each of the first, second, third, fourth, fifth lenselements 110, 120, 130, 140, 150 and the filtering unit 160 may comprisean object-side surface 111/121/131/141/151/161 facing toward the objectside A1 and an image-side surface 112/122/132/142/152/162 facing towardthe image side A2. The example embodiment of the filtering unit 160illustrated may be an IR cut filter (infrared cut filter) positionedbetween the fifth lens element 150 and an image plane 170. The filteringunit 160 selectively absorbs light with specific wavelength from thelight passing optical imaging lens 1. For example, IR light may beabsorbed, and this may prohibit the IR light which is not seen by humaneyes from producing an image on the image plane 170.

Please note that during the normal operation of the optical imaging lens1, the distance between any two adjacent lens elements of the first,second, third, fourth and fifth lens elements 110, 120, 130, 140, 150 isa unchanged value, i.e. the optical imaging lens 1 is a prime lens.

Example embodiments of each lens element of the optical imaging lens 1which may be constructed by glass or plastic material will now bedescribed with reference to the drawings.

An example embodiment of the first lens element 110, which isconstructed by glass material, has negative refracting power. Theobject-side surface 111 may be a convex surface comprising a convexportion 1111 in a vicinity of the optical axis and a convex portion 1112in a vicinity of a periphery of the first lens element 110. Theimage-side surface 112 may be a concave surface comprising a concaveportion 1121 in a vicinity of the optical axis and a concave portion1122 in a vicinity of the periphery of the first lens element 110.

An example embodiment of the second lens element 120, which isconstructed by plastic material, has negative refracting power. Theobject-side surface 121 may be a convex surface comprising a convexportion 1211 in a vicinity of the optical axis and a convex portion 1212in a vicinity of a periphery of the second lens element 120. Theimage-side surface 122 may be a concave surface comprising a concaveportion 1221 in a vicinity of the optical axis and a concave portion1222 in a vicinity of the periphery of the second lens element 120.

An example embodiment of the third lens element 130, which isconstructed by plastic material, has positive refracting power. Theobject-side surface 131 may be a concave surface comprising a concaveportion 1311 in a vicinity of the optical axis and a concave portion1312 in a vicinity of a periphery of the third lens element 130. Theimage-side surface 132 may be a convex surface comprising a convexportion 1321 in a vicinity of the optical axis and a convex portion 1322in a vicinity of the periphery of the third lens element 130.

An example embodiment of the fourth lens element 140, which isconstructed by plastic material, has negative refracting power. Theobject-side surface 141 may be a convex surface comprising a convexportion 1411 in a vicinity of the optical axis and a convex portion 1412in a vicinity of a periphery of the fourth lens element 140. Theimage-side surface 142 may be a concave surface comprising a concaveportion 1421 in a vicinity of the optical axis and a concave portion1422 in a vicinity of the periphery of the fourth lens element 140.

An example embodiment of the fifth lens element 150, which isconstructed by plastic material, has positive refracting power. Theobject-side surface 151 may be a convex surface comprising a convexportion 1511 in a vicinity of the optical axis and a convex portion 1512in a vicinity of a periphery of the fifth lens element 150. Theimage-side surface 152 may be a convex surface comprising a convexportion 1521 in a vicinity of the optical axis and a convex portion 1522in a vicinity of the periphery of the fifth lens element 150.

In example embodiments, air gaps may exist between the first and secondlens elements 110, 120, the second and third lens elements 120, 130, thethird and fourth lens elements, 130, 140, the fifth lens element 150 andthe filtering unit 160, and the filtering unit 160 and the image plane170 of the image sensor. For example, FIG. 1 illustrates the air gap d1existing between the first lens element 110 and the second lens element120, the air gap d2 existing between the second lens element 120 and thethird lens element 130, the air gap d3 existing between the third lenselement 130 and the fourth lens element 140, the air gap d4 existingbetween the fifth lens element 150 and the filtering unit 160 and theair gap d5 existing between the filtering unit 160 and the image plane170 of the image sensor. The profiles of opposite surfaces of the fourthlens element 140 and the fifth lens element 150 may correspond to eachother, and in such situation, the air gap may not exist. The air gap d1is denoted by G1, the air gap d2 is denoted by G2, the air gap d3 isdenoted by G3, and the sum of d1, d2 and d3 is denoted by AAG. Pleasenote, in other embodiments, any of the aforementioned air gaps may ormay not exist.

FIG. 8 depicts the optical characteristics of each lens elements in theoptical imaging lens 1 of the present embodiment, and please refer toFIG. 70A for the values of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF,GFP, TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2),ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3,T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3the present embodiment. The distance from the object-side surface 111 ofthe first lens element 110 to the image plane 170 along the optical axismay be about 12.419 mm, the effective focal length (EFL) may be about1.030 mm, image height may be about 1.8 mm, half field of view angle(HFOV) may be about 64.291, and f-number (Fno) may be about 2.2. Thus,the optical imaging lens 1 may be capable of providing excellent imagingquality for smaller sized mobile devices.

The aspherical surfaces, including the object-side surface 121 and theimage-side surface 122 of the second lens element 120, the object-sidesurface 131 and the image-side surface 132 of the third lens element130, the object-side surface 141 and the image-side surface 142 of thefourth lens element 140, the object-side surface 151 and the image-sidesurface 152 of the fifth lens element 150, are all defined by thefollowing aspherical formula:

${Z(Y)} = {{\frac{Y^{2}}{R}/\left( {1 + \sqrt{1 - {\left( {1 + K} \right)\frac{Y^{2}}{R^{2}}}}} \right)} + {\sum\limits_{i = 1}^{n}{a_{i} \times Y^{i}}}}$wherein, Y represents the perpendicular distance between the point ofthe aspherical surface and the optical axis; Z represents the depth ofthe aspherical surface (the perpendicular distance between the point ofthe aspherical surface at a distance Y from the optical axis and thetangent plane of the vertex on the optical axis of the asphericalsurface); R represents the radius of curvature of the surface of thelens element; K represents a conic constant; and a_(i) represents anaspherical coefficient of i^(th) level. The values of each asphericalparameter are shown in FIG. 9.

Please refer to FIG. 7(a), longitudinal spherical aberration of theoptical imaging lens in the present embodiment is shown in thecoordinate in which the horizontal axis represents focus and thevertical axis represents field of view, and FIG. 7(b), astigmatismaberration of the optical imaging lens in the present embodiment in thesagittal direction is shown in the coordinate in which the horizontalaxis represents focus and the vertical axis represents image height, andFIG. 7(c), astigmatism aberration in the tangential direction of theoptical imaging lens in the present embodiment is shown in thecoordinate in which the horizontal axis represents focus and thevertical axis represents image height, and FIG. 7(d), distortionaberration of the optical imaging lens in the present embodiment isshown in the coordinate in which the horizontal axis representspercentage and the vertical axis represents image height. The curves ofdifferent wavelengths (470 nm, 555 nm, 650 nm) are closed to each other.This represents off-axis light with respect to these wavelengths isfocused around an image point. From the vertical deviation of each curveshown therein, the offset of the off-axis light relative to the imagepoint may be within about ±0.08 mm. Therefore, the present embodimentimproves the longitudinal spherical aberration with respect to differentwavelengths. For astigmatism aberration in the sagittal direction, thefocus variation with respect to the three wavelengths in the whole fieldmay fall within about ±0.2 mm, for astigmatism aberration in thetangential direction, the focus variation with respect to the threewavelengths in the whole field may fall within about ±0.2 mm, and thevariation of the distortion aberration may be within about ±50%.

According to the value of the aberrations, it is shown that the opticalimaging lens 1 of the present embodiment, with the length that may be asshort as about 12.419 mm, may be capable of providing good imagingquality as well as good optical characteristics.

Reference is now made to FIGS. 10-13. FIG. 10 illustrates an examplecross-sectional view of an optical imaging lens 2 having five lenselements of the optical imaging lens according to a second exampleembodiment. FIG. 11 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 2 according to the second example embodiment. FIG. 12 shows anexample table of optical data of each lens element of the opticalimaging lens 2 according to the second example embodiment. FIG. 13 showsan example table of aspherical data of the optical imaging lens 2according to the second example embodiment. The reference numberslabeled in the present embodiment are similar to those in the firstembodiment for the similar elements, but here the reference numbers areinitialed with 2, for example, reference number 231 for labeling theobject-side surface of the third lens element 230, reference number 232for labeling the image-side surface of the third lens element 230, etc.

As shown in FIG. 10, the optical imaging lens 2 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 210, a second lenselement 220, a third lens element 230, an aperture stop 200, a fourthlens element 240 and a fifth lens element 250.

The differences between the second embodiment and the first embodimentare the radius of curvature, thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces211, 221, 231, 241, 251 facing to the object side A1 and the image-sidesurfaces 212, 222, 232, 242, 252 facing to the image side A2, aresimilar to those in the first embodiment. Here and in the embodimentshereinafter, for clearly showing the drawings of the present embodiment,only the surface shapes which are different from that in the firstembodiment are labeled. Please refer to FIG. 12 for the opticalcharacteristics of each lens elements in the optical imaging lens 2 thepresent embodiment, and please refer to FIG. 70A for the values of T1,G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG, TTL, BFL,TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1), AAG/(G3+G2),G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1, T5/BFL,BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of the presentembodiment. The distance from the object-side surface 211 of the firstlens element 210 to the image plane 270 along the optical axis may beabout 11.730 mm, the image height may be about 1.8 mm, EFL may be about1.004 mm, HFOV may be about 65.080, and Fno may be about 2.2. Comparedwith the first embodiment, the length of the optical imaging lens 2 maybe shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.11(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 11(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 11(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As shown in FIG. 11(d), the variation of the distortionaberration may be within about ±50%.

Compared with the first embodiment, the longitudinal sphericalaberration and astigmatism aberration of the optical imaging lens 2 maybe less. According to the value of the aberrations, it is shown that theoptical imaging lens 2 of the present embodiment, with the length thatmay be as short as about 11.730 mm, may be capable of providing goodimaging quality as well as good optical characteristics.

Reference is now made to FIGS. 14-17. FIG. 14 illustrates an examplecross-sectional view of an optical imaging lens 3 having five lenselements of the optical imaging lens according to a third exampleembodiment. FIG. 15 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 3 according to the third example embodiment. FIG. 16 shows anexample table of optical data of each lens element of the opticalimaging lens 3 according to the third example embodiment. FIG. 17 showsan example table of aspherical data of the optical imaging lens 3according to the third example embodiment. The reference numbers labeledin the present embodiment are similar to those in the first embodimentfor the similar elements, but here the reference numbers are initialedwith 3, for example, reference number 331 for labeling the object-sidesurface of the third lens element 330, reference number 332 for labelingthe image-side surface of the third lens element 330, etc.

As shown in FIG. 14, the optical imaging lens 3 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 310, a second lenselement 320, a third lens element 330, an aperture stop 300, a fourthlens element 340 and a fifth lens element 350.

The differences between the third embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces311, 321, 331, 341, 351 facing to the object side A1 and the image-sidesurfaces 312, 322, 332, 342, 352 facing to the image side A2, aresimilar to those in the first embodiment. Please refer to FIG. 16 forthe optical characteristics of each lens element in the optical imaginglens 3 of the present embodiment, and please refer to FIG. 70A for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 311 of thefirst lens element 310 to the image plane 370 along the optical axis maybe about 11.172 mm, the image height may be about 1.8 mm, EFL may beabout 1.001 mm, HFOV may be about 65.161, and Fno may be about 2.2.Compared with the first embodiment, the length of the optical imaginglens 2 may be shorter and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.15(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 15(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 15(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 15(d), the variation of the distortionaberration may be within about ±50%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 3 may be lower. According to the value of theaberrations, it is shown that the optical imaging lens 3 of the presentembodiment, with the length that may be as short as about 11.172 mm, maybe capable of providing good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 18-21. FIG. 18 illustrates an examplecross-sectional view of an optical imaging lens 4 having five lenselements of the optical imaging lens according to a fourth exampleembodiment. FIG. 19 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 4 according to the fourth embodiment. FIG. 20 shows an exampletable of optical data of each lens element of the optical imaging lens 4according to the fourth example embodiment. FIG. 21 shows an exampletable of aspherical data of the optical imaging lens 4 according to thefourth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 4, forexample, reference number 431 for labeling the object-side surface ofthe third lens element 430, reference number 432 for labeling theimage-side surface of the third lens element 430, etc.

As shown in FIG. 18, the optical imaging lens 4 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 410, a second lenselement 420, a third lens element 430, an aperture stop 400, a fourthlens element 44 and a fifth lens element 450.

The differences between the fourth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces411, 421, 431, 441, 451 facing to the object side A1 and the image-sidesurfaces 412, 422, 432, 442, 452 facing to the image side A2, aresimilar to those in the first embodiment. Please refer to FIG. 20 forthe optical characteristics of each lens elements in the optical imaginglens 4 of the present embodiment, please refer to FIG. 70A for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 411 of thefirst lens element 410 to the image plane 470 along the optical axis maybe about 11.078 mm, the image height may be about 1.8 mm, EFL may beabout 0.979 mm, HFOV may be about 97.149, and Fno may be about 2.2.Compared with the first embodiment, the length of the optical imaginglens 4 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.19(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 19(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 19(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 19(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 4 may be lower. According to the value of theaberrations, it is shown that the optical imaging lens 4 of the presentembodiment, with the length that may be as short as about 11.078 mm, maybe capable of providing good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 22-25. FIG. 22 illustrates an examplecross-sectional view of an optical imaging lens 5 having five lenselements of the optical imaging lens according to a fifth exampleembodiment. FIG. 23 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 5 according to the fifth embodiment. FIG. 24 shows an example tableof optical data of each lens element of the optical imaging lens 5according to the fifth example embodiment. FIG. 25 shows an exampletable of aspherical data of the optical imaging lens 5 according to thefifth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 5, forexample, reference number 531 for labeling the object-side surface ofthe third lens element 530, reference number 532 for labeling theimage-side surface of the third lens element 530, etc.

As shown in FIG. 22, the optical imaging lens 5 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 510, a second lenselement 520, a third lens element 530, an aperture stop 500, a fourthlens element 540 and a fifth lens element 550.

The differences between the fifth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces511, 521, 531, 541, 551 facing to the object side A1 and the image-sidesurfaces 512, 522, 532, 542, 552 facing to the image side A2, aresimilar to those in the first embodiment. Please refer to FIG. 24 forthe optical characteristics of each lens elements in the optical imaginglens 5 of the present embodiment, please refer to FIG. 70A for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 511 of thefirst lens element 510 to the image plane 570 along the optical axis maybe about 11.304 mm, the image height may be about 1.8 mm, EFL may beabout 1.026 mm, HFOV may be about 96.356, and Fno may be about 2.2.Compared with the first embodiment, the length of the optical imaginglens 5 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.23(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 23(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 23(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout +0.2 mm. As shown in FIG. 23(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 5 may be lower. According to the value of theaberrations, it is shown that the optical imaging lens 5 of the presentembodiment, with the length that may be as short as about 11.304 mm, maybe capable of providing good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 26-29. FIG. 26 illustrates an examplecross-sectional view of an optical imaging lens 6 having five lenselements of the optical imaging lens according to a sixth exampleembodiment. FIG. 27 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 6 according to the sixth embodiment. FIG. 28 shows an example tableof optical data of each lens element of the optical imaging lens 6according to the sixth example embodiment. FIG. 29 shows an exampletable of aspherical data of the optical imaging lens 6 according to thesixth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 6, forexample, reference number 631 for labeling the object-side surface ofthe third lens element 630, reference number 632 for labeling theimage-side surface of the third lens element 630, etc.

As shown in FIG. 26, the optical imaging lens 6 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 610, a second lenselement 620, a third lens element 630, an aperture stop 600, a fourthlens element 640 and a fifth lens element 650.

The differences between the sixth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces611, 621, 631, 641, 651 facing to the object side A1 and the image-sidesurfaces 612, 622, 632, 642, 652 facing to the image side A2, aresimilar to those in the first embodiment, and the fourth lens element640 has positive refracting power. Please refer to FIG. 28 for theoptical characteristics of each lens elements in the optical imaginglens 6 of the present embodiment, please refer to FIG. 70A for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 611 of thefirst lens element 610 to the image plane 670 along the optical axis maybe about 11.768 mm, the image height may be about 1.8 mm, EFL may beabout 1.047 mm, HFOV may be about 95.563, and Fno may be about 2.2.Compared with the first embodiment, the length of the optical imaginglens 6 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.27(a), the offset of the off-axis light relative to the image point maybe within about ±0.08 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 27(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 27(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 27(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the astigmatism aberration in thesagittal direction may be lower. According to the value of theaberrations, it is shown that the optical imaging lens 6 of the presentembodiment, with the length that may be as short as about 11.768 mm, maybe capable of providing good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 30-33. FIG. 30 illustrates an examplecross-sectional view of an optical imaging lens 7 having five lenselements of the optical imaging lens according to a seventh exampleembodiment. FIG. 31 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 7 according to the seventh embodiment. FIG. 32 shows an exampletable of optical data of each lens element of the optical imaging lens 7according to the seventh example embodiment. FIG. 33 shows an exampletable of aspherical data of the optical imaging lens 7 according to theseventh example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 7, forexample, reference number 731 for labeling the object-side surface ofthe third lens element 730, reference number 732 for labeling theimage-side surface of the third lens element 730, etc.

As shown in FIG. 30, the optical imaging lens 7 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 710, a second lenselement 720, a third lens element 730, an aperture stop 700, a fourthlens element 740 and a fifth lens element 750.

The differences between the seventh embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces711, 721, 731, 741, 751 facing to the object side A1 and the image-sidesurfaces 712, 722, 732, 742, 752 facing to the image side A2, aresimilar to those in the first embodiment. Please refer to FIG. 32 forthe optical characteristics of each lens elements in the optical imaginglens 7 of the present embodiment, please refer to FIG. 70A for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 711 of thefirst lens element 710 to the image plane 770 along the optical axis maybe about 12.330 mm, the image height may be about 1.8 mm, EFL may beabout 1.042 mm, HFOV may be about 93.113, and Fno may be about 2.2.Compared with the first embodiment, the length of the optical imaginglens 7 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.31(a), the offset of the off-axis light relative to the image point maybe within about ±0.02 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 31(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.04 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 31(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout +0.08 mm. As shown in FIG. 31(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration both in the sagittal andtangential directions of the optical imaging lens 7 may be less.According to the value of the aberrations, it is shown that the opticalimaging lens 7 of the present embodiment, with the length that may be asshort as about 12.330 mm, may be capable of providing good imagingquality as well as good optical characteristics.

Reference is now made to FIGS. 34-37. FIG. 34 illustrates an examplecross-sectional view of an optical imaging lens 8 having five lenselements of the optical imaging lens according to an eighth exampleembodiment. FIG. 35 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 8 according to the eighth embodiment. FIG. 36 shows an exampletable of optical data of each lens element of the optical imaging lens 8according to the eighth example embodiment. FIG. 37 shows an exampletable of aspherical data of the optical imaging lens 8 according to theeighth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 8, forexample, reference number 831 for labeling the object-side surface ofthe third lens element 830, reference number 832 for labeling theimage-side surface of the third lens element 830, etc.

As shown in FIG. 34, the optical imaging lens 8 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 810, a second lenselement 820, a third lens element 830, an aperture stop 800, a fourthlens element 840 and a fifth lens element 850.

The differences between the eighth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces811, 821, 831, 841, 851 facing to the object side A1 and the image-sidesurfaces 812, 822, 832, 842, 852 facing to the image side A2, aresimilar to those in the first embodiment, and the fourth lens element840 has positive refracting power. Please refer to FIG. 36 for theoptical characteristics of each lens elements in the optical imaginglens 8 of the present embodiment, please refer to FIG. 70A for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 811 of thefirst lens element 810 to the image plane 870 along the optical axis maybe about 13.198 mm, the image height may be about 1.8 mm, EFL may beabout 0.9858 mm, HFOV may be about 95.249, and Fno may be about 2.2.Compared with the first embodiment, the HFOV of the optical imaging lens8 may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.35(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 35(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 35(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 35(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 8 may be less. According to the value of theaberrations, it is shown that the optical imaging lens 8 of the presentembodiment, with the length that may be as short as about 13.198 mm, maybe capable to provide good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 38-41. FIG. 38 illustrates an examplecross-sectional view of an optical imaging lens 9 having five lenselements of the optical imaging lens according to an ninth exampleembodiment. FIG. 39 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 9 according to the ninth embodiment. FIG. 40 shows an example tableof optical data of each lens element of the optical imaging lens 9according to the ninth example embodiment. FIG. 41 shows an exampletable of aspherical data of the optical imaging lens 9 according to theninth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 9, forexample, reference number 931 for labeling the object-side surface ofthe third lens element 930, reference number 932 for labeling theimage-side surface of the third lens element 930, etc.

As shown in FIG. 38, the optical imaging lens 9 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 910, a second lenselement 920, a third lens element 930, an aperture stop 900, a fourthlens element 940 and a fifth lens element 950.

The differences between the ninth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces911, 921, 931, 941, 951 facing to the object side A1 and the image-sidesurfaces 912, 922, 932, 942, 952 facing to the image side A2, aresimilar to those in the first embodiment. Please refer to FIG. 40 forthe optical characteristics of each lens elements in the optical imaginglens 9 of the present embodiment, please refer to FIG. 70B for thevalues of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG,TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 911 of thefirst lens element 910 to the image plane 970 along the optical axis maybe about 11.754 mm, the image height may be about 1.8 mm, EFL may beabout 1.063 mm, HFOV may be about 95.456, and Fno may be about 2.2.Compared with the first embodiment, the length of the optical imaginglens 9 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.39(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 39(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 39(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 39(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 9 may be less. According to the value of theaberrations, it is shown that the optical imaging lens 9 of the presentembodiment, with the length that may be as short as about 11.754 mm, maybe capable to provide good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 42-45. FIG. 42 illustrates an examplecross-sectional view of an optical imaging lens 10 having five lenselements of the optical imaging lens according to an tenth exampleembodiment. FIG. 43 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 10 according to the tenth embodiment. FIG. 44 shows an exampletable of optical data of each lens element of the optical imaging lens10 according to the tenth example embodiment. FIG. 45 shows an exampletable of aspherical data of the optical imaging lens 10 according to thetenth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 10, forexample, reference number 1031 for labeling the object-side surface ofthe third lens element 1030, reference number 1032 for labeling theimage-side surface of the third lens element 1030, etc.

As shown in FIG. 34, the optical imaging lens 10 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1010, a second lenselement 1020, a third lens element 1030, an aperture stop 1000, a fourthlens element 1040 and a fifth lens element 1050.

The differences between the tenth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces1011, 1021, 1031, 1041, 1051 facing to the object side A1 and theimage-side surfaces 1012, 1022, 1032, 1042, 1052 facing to the imageside A2, are similar to those in the first embodiment. Please refer toFIG. 44 for the optical characteristics of each lens elements in theoptical imaging lens 10 of the present embodiment, please refer to FIG.70B for the values of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP,TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2),ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3,T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3of the present embodiment. The distance from the object-side surface1011 of the first lens element 1010 to the image plane 1070 along theoptical axis may be about 11.157 mm, the image height may be about 1.8mm, EFL may be about 1.054 mm, HFOV may be about 95.731, and Fno may beabout 2.2. Compared with the first embodiment, the length of the opticalimaging lens 10 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.43(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 43(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 43(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout +0.2 mm. As shown in FIG. 43(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 10 may be less. According to the value of theaberrations, it is shown that the optical imaging lens 10 of the presentembodiment, with the length that may be as short as about 11.157 mm, iscapable to provide good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 46-49. FIG. 46 illustrates an examplecross-sectional view of an optical imaging lens 11 having five lenselements of the optical imaging lens according to an eleventh exampleembodiment. FIG. 47 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 11 according to the eleventh embodiment. FIG. 48 shows an exampletable of optical data of each lens element of the optical imaging lens11 according to the eleventh example embodiment. FIG. 49 shows anexample table of aspherical data of the optical imaging lens 11according to the eleventh example embodiment. The reference numberslabeled in the present embodiment are similar to those in the firstembodiment for the similar elements, but here the reference numbers areinitialed with 11, for example, reference number 1131 for labeling theobject-side surface of the third lens element 1130, reference number1132 for labeling the image-side surface of the third lens element 1130,etc.

As shown in FIG. 46, the optical imaging lens 11 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1110, a second lenselement 1120, a third lens element 1130, an aperture stop 1100, a fourthlens element 1140 and a fifth lens element 1150.

The differences between the eleventh embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, related optical parameters,such as back focal length, and the configuration of the concave/convexshape of the object-side surface 1121, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces1111, 1131, 1141, 1151 facing to the object side A1 and the image-sidesurfaces 1112, 1122, 1132, 1142, 1152 facing to the image side A2, aresimilar to those in the first embodiment. Specifically, the object-sidesurface 1121 of the second lens element 1120 is a concave surfacecomprising a concave portion 11211 in a vicinity of the optical axis anda concave portion 11212 in a vicinity of a periphery of the second lenselement 1120. Please refer to FIG. 48 for the optical characteristics ofeach lens elements in the optical imaging lens 11 of the presentembodiment, please refer to FIG. 70B for the values of T1, G1, T2, G2,T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4),ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3,TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1, T5/BFL, BFL/(G3+G2), T5/T2,ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of the present embodiment. Thedistance from the object-side surface 1111 of the first lens element1110 to the image plane 1170 along the optical axis may be about 11.675mm, the image height may be about 1.8 mm, EFL may be about 0.995 mm,HFOV may be about 94.762, and Fno may be about 2.2. Compared with thefirst embodiment, the length of the optical imaging lens 11 may beshorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.47(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 47(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 47(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 47(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 11 may be less. According to the value of theaberrations, it is shown that the optical imaging lens 11 of the presentembodiment, with the length that may be as short as about 11.675 mm, maybe capable to provide good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 50-53. FIG. 50 illustrates an examplecross-sectional view of an optical imaging lens 12 having five lenselements of the optical imaging lens according to an twelfth exampleembodiment. FIG. 51 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 12 according to the twelfth embodiment. FIG. 52 shows an exampletable of optical data of each lens element of the optical imaging lens12 according to the twelfth example embodiment. FIG. 53 shows an exampletable of aspherical data of the optical imaging lens 12 according to thetwelfth example embodiment. The reference numbers labeled in the presentembodiment are similar to those in the first embodiment for the similarelements, but here the reference numbers are initialed with 12, forexample, reference number 1231 for labeling the object-side surface ofthe third lens element 1230, reference number 1232 for labeling theimage-side surface of the third lens element 1230, etc.

As shown in FIG. 50, the optical imaging lens 12 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1210, a second lenselement 1220, a third lens element 1230, an aperture stop 1200, a fourthlens element 1240 and a fifth lens element 1250.

The differences between the twelfth embodiment and the first embodimentare the radius of curvature and thickness of each lens element, thedistance of each air gap, aspherical data, and related opticalparameters, such as back focal length, but the configuration of theconcave/convex shape of surfaces, comprising the object-side surfaces1211, 1221, 1231, 1241, 1251 facing to the object side A1 and theimage-side surfaces 1212, 1222, 1232, 1242, 1252 facing to the imageside A2, are similar to those in the first embodiment. Please refer toFIG. 52 for the optical characteristics of each lens elements in theoptical imaging lens 12 of the present embodiment, please refer to FIG.70B for the values of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP,TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2),ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3,T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3of the present embodiment. The distance from the object-side surface1211 of the first lens element 1210 to the image plane 1270 along theoptical axis may be about 12.183 mm, the image height may be about 1.8mm, EFL may be about 1.073 mm, HFOV may be about 95.461, and Fno may beabout 2.4. Compared with the first embodiment, the length of the opticalimaging lens 12 may be shorter, and the HFOV may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.51(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 51(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 51(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 51(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 12 may be less. According to the value of theaberrations, it is shown that the optical imaging lens 12 of the presentembodiment, with the length that may be as short as about 12.183 mm, maybe capable to provide good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 54-57. FIG. 54 illustrates an examplecross-sectional view of an optical imaging lens 13 having five lenselements of the optical imaging lens according to an thirteenth exampleembodiment. FIG. 55 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 13 according to the thirteenth embodiment. FIG. 56 shows an exampletable of optical data of each lens element of the optical imaging lens13 according to the thirteenth example embodiment. FIG. 57 shows anexample table of aspherical data of the optical imaging lens 13according to the thirteenth example embodiment. The reference numberslabeled in the present embodiment are similar to those in the firstembodiment for the similar elements, but here the reference numbers areinitialed with 13, for example, reference number 1331 for labeling theobject-side surface of the third lens element 1330, reference number1332 for labeling the image-side surface of the third lens element 1330,etc.

As shown in FIG. 54, the optical imaging lens 13 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1310, a second lenselement 1320, a third lens element 1330, an aperture stop 1300, a fourthlens element 1340 and a fifth lens element 1350.

The differences between the thirteenth embodiment and the firstembodiment are the radius of curvature and thickness of each lenselement, the distance of each air gap, aspherical data, related opticalparameters, such as back focal length, and the configuration of theconcave/convex shape of the object-side surface 1321, but theconfiguration of the concave/convex shape of surfaces, comprising theobject-side surfaces 1311, 1331, 1341, 1351 facing to the object side A1and the image-side surfaces 1312, 1322, 1332, 1342, 1352 facing to theimage side A2, are similar to those in the first embodiment.Specifically, the object-side surface 1321 of the second lens element1320 is a concave surface comprising a concave portion 13211 in avicinity of the optical axis and a concave portion 13212 in a vicinityof a periphery of the second lens element 1320. Please refer to FIG. 56for the optical characteristics of each lens elements in the opticalimaging lens 13 of the present embodiment, please refer to FIG. 70B forthe values of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT,AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1),AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1,T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of thepresent embodiment. The distance from the object-side surface 1311 ofthe first lens element 1310 to the image plane 1370 along the opticalaxis may be about 14.420 mm, the image height may be about 1.8 mm, EFLmay be about 1.023 mm, HFOV may be about 94.494, and Fno may be about2.4. Compared with the first embodiment, the HFOV of the optical imaginglens 13 may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.55(a), the offset of the off-axis light relative to the image point maybe within about ±0.08 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 55(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 55(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.2 mm. As shown in FIG. 55(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the astigmatism aberration in thesagittal direction of the optical imaging lens 13 may be less. Accordingto the value of the aberrations, it is shown that the optical imaginglens 13 of the present embodiment, with the length as short as about14.420 mm, may be capable to provide good imaging quality as well asgood optical characteristics.

Reference is now made to FIGS. 58-61. FIG. 58 illustrates an examplecross-sectional view of an optical imaging lens 14 having five lenselements of the optical imaging lens according to an fourteenth exampleembodiment. FIG. 59 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 14 according to the fourteenth embodiment. FIG. 60 shows an exampletable of optical data of each lens element of the optical imaging lens14 according to the fourteenth example embodiment. FIG. 61 shows anexample table of aspherical data of the optical imaging lens 14according to the fourteenth example embodiment. The reference numberslabeled in the present embodiment are similar to those in the firstembodiment for the similar elements, but here the reference numbers areinitialed with 14, for example, reference number 1431 for labeling theobject-side surface of the third lens element 1430, reference number1432 for labeling the image-side surface of the third lens element 1430,etc.

As shown in FIG. 58, the optical imaging lens 14 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1410, a second lenselement 1420, a third lens element 1430, an aperture stop 1400, a fourthlens element 1440 and a fifth lens element 1450.

The differences between the fourteenth embodiment and the firstembodiment are the radius of curvature and thickness of each lenselement, the distance of each air gap, aspherical data, related opticalparameters, such as back focal length, and the configuration of theconcave/convex shape of the object-side surface 1421, but theconfiguration of the concave/convex shape of surfaces, comprising theobject-side surfaces 1411, 1431, 1441, 1451 facing to the object side A1and the image-side surfaces 1412, 1422, 1432, 1442, 1452 facing to theimage side A2, are similar to those in the first embodiment, and thefourth lens element 1440 has positive refracting power. Specifically,the object-side surface 1421 of the second lens element 1420 is aconcave surface comprising a concave portion 14211 in a vicinity of theoptical axis and a concave portion 14212 in a vicinity of a periphery ofthe second lens element 1420. Please refer to FIG. 60 for the opticalcharacteristics of each lens elements in the optical imaging lens 14 ofthe present embodiment, please refer to FIG. 70B for the values of T1,G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG, TTL, BFL,TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1), AAG/(G3+G2),G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1, T5/BFL,BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of the presentembodiment. The distance from the object-side surface 1411 of the firstlens element 1410 to the image plane 1470 along the optical axis may beabout 13.161 mm, the image height may be about 1.8 mm, EFL may be about1.042 mm, HFOV may be about 95.076, and Fno may be about 2.4. Comparedwith the first embodiment, the HFOV of the optical imaging lens 14 maybe greater.

As illustrated by the longitudinal spherical aberration shown in FIG.59(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 59(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.05 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 59(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout +0.05 mm. As shown in FIG. 59(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration of the optical imaging lens 14may be less. According to the value of the aberrations, it is shown thatthe optical imaging lens 14 of the present embodiment, with the lengththat may be as short as about 13.161 mm, may be capable to provide goodimaging quality as well as good optical characteristics.

Reference is now made to FIGS. 62-65. FIG. 62 illustrates an examplecross-sectional view of an optical imaging lens 15 having five lenselements of the optical imaging lens according to an fifteenth exampleembodiment. FIG. 63 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 15 according to the fifteenth embodiment. FIG. 64 shows an exampletable of optical data of each lens element of the optical imaging lens15 according to the fifteenth example embodiment. FIG. 65 shows anexample table of aspherical data of the optical imaging lens 15according to the fifteenth example embodiment. The reference numberslabeled in the present embodiment are similar to those in the firstembodiment for the similar elements, but here the reference numbers areinitialed with 15, for example, reference number 1531 for labeling theobject-side surface of the third lens element 1530, reference number1532 for labeling the image-side surface of the third lens element 1530,etc.

As shown in FIG. 62, the optical imaging lens 15 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1510, a second lenselement 1520, a third lens element 1530, an aperture stop 1500, a fourthlens element 1540 and a fifth lens element 1550.

The differences between the fifteenth embodiment and the firstembodiment are the radius of curvature and thickness of each lenselement, the distance of each air gap, aspherical data, and relatedoptical parameters, such as back focal length, but the configuration ofthe concave/convex shape of surfaces, comprising the object-sidesurfaces 1511, 1521, 1531, 1541, 1551 facing to the object side A1 andthe image-side surfaces 1512, 1522, 1532, 1542, 1552 facing to the imageside A2, are similar to those in the first embodiment. Please refer toFIG. 64 for the optical characteristics of each lens elements in theoptical imaging lens 15 of the present embodiment, please refer to FIG.70B for the values of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP,TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2),ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3,T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3of the present embodiment. The distance from the object-side surface1511 of the first lens element 1510 to the image plane 1570 along theoptical axis may be about 13.784 mm, the image height may be about 1.8mm, EFL may be about 0.990 mm, HFOV may be about 94.536, and Fno may beabout 2.4. Compared with the first embodiment, the HFOV of the opticalimaging lens 15 may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.63(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 63(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.1 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 63(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout +0.2 mm. As shown in FIG. 63(d), the variation of the distortionaberration may be within about ±80%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration in the sagittal direction ofthe optical imaging lens 15 may be less. According to the value of theaberrations, it is shown that the optical imaging lens 15 of the presentembodiment, with the length that may be as short as about 13.784 mm, maybe capable to provide good imaging quality as well as good opticalcharacteristics.

Reference is now made to FIGS. 66-69. FIG. 66 illustrates an examplecross-sectional view of an optical imaging lens 16 having five lenselements of the optical imaging lens according to an sixteenth exampleembodiment. FIG. 67 shows example charts of longitudinal sphericalaberration and other kinds of optical aberrations of the optical imaginglens 16 according to the sixteenth embodiment. FIG. 68 shows an exampletable of optical data of each lens element of the optical imaging lens16 according to the sixteenth example embodiment. FIG. 69 shows anexample table of aspherical data of the optical imaging lens 16according to the sixteenth example embodiment. The reference numberslabeled in the present embodiment are similar to those in the firstembodiment for the similar elements, but here the reference numbers areinitialed with 16, for example, reference number 1631 for labeling theobject-side surface of the third lens element 1630, reference number1632 for labeling the image-side surface of the third lens element 1630,etc.

As shown in FIG. 66, the optical imaging lens 16 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element 1610, a second lenselement 1620, an aperture stop 1600, a third lens element 1630, a fourthlens element 1640 and a fifth lens element 1650.

The differences between the sixteenth embodiment and the firstembodiment are the radius of curvature and thickness of each lenselement, the distance of each air gap, aspherical data, and relatedoptical parameters, such as back focal length, but the configuration ofthe concave/convex shape of surfaces, comprising the object-sidesurfaces 1611, 1621, 1631, 1641, 1651 facing to the object side A1 andthe image-side surfaces 1612, 1622, 1632, 1642, 1652 facing to the imageside A2, are similar to those in the first embodiment. Please refer toFIG. 68 for the optical characteristics of each lens elements in theoptical imaging lens 16 of the present embodiment, please refer to FIG.70B for the values of T1, G1, T2, G2, T3, G3, T4, G4, T5, G5, TF, GFP,TL, ALT, AAG, TTL, BFL, TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2),ALT/(G3+G1), AAG/(G3+G2), G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3,T5/G1, T5/BFL, BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3of the present embodiment. The distance from the object-side surface1611 of the first lens element 1610 to the image plane 1670 along theoptical axis may be about 16.549 mm, the image height may be about 1.8mm, EFL may be about 1.447 mm, HFOV may be about 74.3439, and Fno may beabout 2.4. Compared with the first embodiment, the HFOV of the opticalimaging lens 16 may be greater.

As illustrated by the longitudinal spherical aberration shown in FIG.67(a), the offset of the off-axis light relative to the image point maybe within about ±0.05 mm. As illustrated by the astigmatism aberrationin the sagittal direction shown in FIG. 67(b), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout ±0.05 mm. As illustrated by the astigmatism aberration in thetangential direction shown in FIG. 67(c), the focus variation withrespect to the three wavelengths in the whole field may fall withinabout +0.05 mm. As shown in FIG. 67(d), the variation of the distortionaberration may be within about ±50%.

Compared with the first embodiment, the longitudinal sphericalaberration and the astigmatism aberration of the optical imaging lens 16may be less. According to the value of the aberrations, it is shown thatthe optical imaging lens 16 of the present embodiment, with the lengththat may be as short as about 16.549 mm, may be capable to provide goodimaging quality as well as good optical characteristics.

Please refer to FIGS. 70A and 70B, which show the values of T1, G1, T2,G2, T3, G3, T4, G4, T5, G5, TF, GFP, TL, ALT, AAG, TTL, BFL,TL/(G2+G3+G4), ALT/(G3+T2+T4), TL/(G3+T2), ALT/(G3+G1), AAG/(G3+G2),G1/T1, TTL/T3, TTL/G2, TTL/AAG, T5/G2, T5/T3, T5/G1, T5/BFL,BFL/(G3+G2), T5/T2, ALT/(G3+T4), T5/T1, T3/G2 and BFL/T3 of all sixteenembodiments, and it is clear that the optical imaging lens of thepresent disclosure satisfy the inequality (1) and/or inequalities (2),(3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13), (14), (15),(16), (17), (18) and/or (19).

Reference is now made to FIG. 71, which illustrates an examplestructural view of a first embodiment of mobile device 20 applying anoptical imaging lens. The mobile device 20 may comprise a housing 21 anda photography module 22 positioned in the housing 21. Examples of themobile device 20 may be, but are not limited to, a mobile phone, acamera, a tablet computer, a personal digital assistant (PDA), etc.

As shown in FIG. 71, the photography module 22 may comprise an opticalimaging lens with five lens elements, which is a prime lens and forexample the optical imaging lens 1 of the first embodiment, a lensbarrel 23 for positioning the optical imaging lens 1, a module housingunit 24 for positioning the lens barrel 23, a substrate 172 forpositioning the module housing unit 24, and an image sensor 171 whichmay be positioned on the substrate 172 and at an image side of theoptical imaging lens 1. The image plane 170 may be formed on the imagesensor 171.

In other example embodiments, the structure of the filtering unit 160may be omitted. In some example embodiments, the housing 21, the lensbarrel 23, and/or the module housing unit 24 may be integrated into asingle component or assembled by multiple components. In some exampleembodiments, the image sensor 171 used in the present embodiment may bedirectly attached to a substrate 172 in the form of a chip on board(COB) package, and such package may be different from traditional chipscale packages (CSP) since COB package does not require a cover glassbefore the image sensor 171 in the optical imaging lens 1. The describedexample embodiments are not limited to this package type and could beselectively incorporated in other described embodiments.

The five lens elements 110, 120, 130, 140, 150 are positioned in thelens barrel 23 in the way of separated by an air gap between any twoadjacent lens elements but except between the fourth and fifth lenselements 140, 150.

The module housing unit 24 may comprise a lens backseat 2401 forpositioning the lens barrel 23 and an image sensor base 2406 positionedbetween the lens backseat 2401 and the image sensor 171. The lens barrel23 and the lens backseat 2401 are positioned along a same axis I-I′, andthe lens backseat 2401 may be close to the outside of the lens barrel23. The image sensor base 2406 may be exemplarily close to the lensbackseat 2401 here. The image sensor base 2406 could be optionallyomitted in some other embodiments of the present disclosure.

Because the length of the optical imaging lens 1 may be merely 12.419mm, the size of the mobile device 20 may be quite small. Therefore, theembodiments described herein meet the market demand for smaller sizedproduct designs.

Reference is now made to FIG. 72, which shows another structural view ofa second embodiment of mobile device 20′ applying optical imaging lens1. One difference between the mobile device 20′ and the mobile device 20may be the lens backseat 2401 comprising a first seat unit 2402, asecond seat unit 2403, a coil 2404 and a magnetic unit 2405. The firstseat unit 2402 may be close to the outside of the lens barrel 23, andpositioned along an axis I-I′, and the second seat unit 2403 may bearound the outside of the first seat unit 2402 and positioned along withthe axis I-I′. The coil 2404 may be positioned between the first seatunit 2402 and the inside of the second seat unit 2403. The magnetic unit2405 may be positioned between the outside of the coil 2404 and theinside of the second seat unit 2403.

The lens barrel 23 and the optical imaging lens 1 positioned therein aredriven by the first seat unit 2402 for moving along the axis I-I′. Therest structure of the mobile device 20′ may be similar to the mobiledevice 20.

Similarly, because the length of the optical imaging lens 1 may be about12.419 mm, but also may be shortened, the mobile device 20′ may bedesigned with a smaller size and meanwhile good optical performance maystill be provided. Therefore, the present embodiment meets the demand ofsmall sized product design and the request of the market.

According to above illustration, the longitudinal spherical aberration,astigmatism aberration both in the sagittal direction and tangentialdirection and distortion aberration in all embodiments are meet userdemands, which may be related to products in the market. The off-axislight with respect to three different wavelengths (470 nm, 555 nm, 650nm) is focused around an image point and the offset of the off-axislight relative to the image point is well controlled with suppressionfor the longitudinal spherical aberration, astigmatism aberration bothin the sagittal direction and tangential direction and distortionaberration. The curves of different wavelengths are closed to eachother, and this represents that the focusing for light having differentwavelengths is good to suppress chromatic dispersion. In summary, lenselements are designed and matched for achieving good imaging quality.

While various embodiments in accordance with the disclosed principleshave been described above, it should be understood that they arepresented by way of example only, and are not limiting. Thus, thebreadth and scope of example embodiment(s) should not be limited by anyof the above-described embodiments, but should be defined only inaccordance with the claims and their equivalents issuing from thisdisclosure. Furthermore, the above advantages and features are providedin described embodiments, but shall not limit the application of suchissued claims to processes and structures accomplishing any or all ofthe above advantages.

Additionally, the section headings herein are provided for consistencywith the suggestions under 37 C.F.R. 1.77 or otherwise to provideorganizational cues. These headings shall not limit or characterize theinvention(s) set out in any claims that may issue from this disclosure.Specifically, a description of a technology in the “Background” is notto be construed as an admission that technology is prior art to anyinvention(s) in this disclosure. Furthermore, any reference in thisdisclosure to “invention” in the singular should not be used to arguethat there is only a single point of novelty in this disclosure.Multiple inventions may be set forth according to the limitations of themultiple claims issuing from this disclosure, and such claimsaccordingly define the invention(s), and their equivalents, that areprotected thereby. In all instances, the scope of such claims shall beconsidered on their own merits in light of this disclosure, but shouldnot be constrained by the headings herein.

What is claimed is:
 1. An optical imaging lens, sequentially from anobject side to an image side along an optical axis, comprising first,second, third, fourth and fifth lens elements, each of the first,second, third, fourth and fifth lens elements having refracting power,an object-side surface facing toward the object side and an image-sidesurface facing toward the image side and a central thickness definedalong the optical axis, wherein: the image-side surface of the firstlens element comprises a concave portion in a vicinity of the opticalaxis; the image-side surface of the second lens element comprises aconcave portion in a vicinity of a periphery of the second lens element;the object-side surface of the third lens element comprises a concaveportion in a vicinity of the optical axis; the object-side surface ofthe fourth lens element comprises a convex portion in a vicinity of aperiphery of the fourth lens element, and the image-side surface of thefourth lens element a concave portion in a vicinity of the periphery ofthe fourth lens element; the fifth lens element is constructed byplastic material; the optical imaging lens comprises no other lenseshaving refracting power beyond the five lens elements; and a distancebetween the object-side surface of the first lens element and animage-side surface of the fifth lens element along the optical axis isrepresented by TL, an air gap between the second lens element and thethird lens element along the optical axis is represented by G2, an airgap between the third lens element and the fourth lens element along theoptical axis is represented by G3, an air gap between the fourth lenselement and the fifth lens element along the optical axis is representedby G4, and TL, G2, G3 and G4 satisfy the inequality:6.4≤TL/(G2+G3+G4).
 2. The optical imaging lens according to claim 1,wherein a sum of the central thicknesses of all five lens elements isrepresented by ALT, the central thickness of the second lens element isrepresented by T2, the central thickness of the fourth lens element isrepresented by T4, and ALT, G3, T2 and T4 satisfy the inequality:ALT/(G3+T2+T4)≤4.2.
 3. The optical imaging lens according to claim 1,wherein the central thickness of the second lens element is representedby T2, and TL, G3 and T2 satisfy the inequality:TL/(G3+T2)≤10.1.
 4. The optical imaging lens according to claim 1,wherein a sum of the central thicknesses of all five lens elements isrepresented by ALT, an air gap between the first lens element and thesecond lens element along the optical axis is represented by G1, andALT, G3 and G1 satisfy the inequality:ALT/(G3+G1)≤5.7.
 5. The optical imaging lens according to claim 1,wherein a sum of all four air gaps from the first lens element to thefifth lens element along the optical axis is represented by AAG, andAAG, G3 and G2 satisfy the inequality:AAG/(G3+G2)≤2.7.
 6. The optical imaging lens according to claim 1,wherein an air gap between the first lens element and the second lenselement along the optical axis is represented by G1, the centralthickness of the first lens element is represented by T1, and G1 and T1satisfy the inequality:G1/T1≤1.4.
 7. The optical imaging lens according to claim 1, wherein adistance between the object-side surface of the first lens element andan image plane along the optical axis is represented by TTL, the centralthickness of the third lens element is represented by T3, and TTL and T3satisfy the inequality:TTL/T3≤7.8.
 8. The optical imaging lens according to claim 1, wherein adistance between the object-side surface of the first lens element andan image plane along the optical axis is represented by TTL, and TTL andG2 satisfy the inequality:TTL/G2≤13.
 9. The optical imaging lens according to claim 1, wherein adistance between the object-side surface of the first lens element andan image plane along the optical axis is represented by TTL, a sum ofall four air gaps from the first lens element to the fifth lens elementalong the optical axis is represented by AAG, and TTL and AAG satisfythe inequality:TTL/AAG≤4.7.
 10. The optical imaging lens according to claim 1, whereinthe central thickness of the fifth lens element is represented by T5,and T5 and G2 satisfy the inequality:T5/G2≤4.1.
 11. The optical imaging lens according to claim 1, whereinthe central thickness of the fifth lens element is represented by T5,the central thickness of the third lens element is represented by T3,and T5 and T3 satisfy the inequality:T5/T3≤1.4.
 12. The optical imaging lens according to claim 1, whereinthe central thickness of the fifth lens element is represented by T5, anair gap between the first lens element and the second lens element alongthe optical axis is represented by G1, and T5 and G1 satisfy theinequality:T5/G1≤1.4.
 13. The optical imaging lens according to claim 1, whereinthe central thickness of the fifth lens element is represented by T5, aback focal length of the optical imaging lens, which is defined as thedistance from the image-side surface of the fifth lens element to theimage plane along the optical axis, is represented by BFL, and T5 andBFL satisfy the inequality:T5/BFL≤1.2.
 14. The optical imaging lens according to claim 1, wherein aback focal length of the optical imaging lens, which is defined as thedistance from the image-side surface of the fifth lens element to theimage plane along the optical axis, is represented by BFL, and BFL, G3and G2 satisfy the inequality:BFL/(G3+G2)≤2.
 15. The optical imaging lens according to claim 1,wherein the central thickness of the fifth lens element is representedby T5, the central thickness of the second lens element is representedby T2, and T5 and T2 satisfy the inequality:T5/T2≤2.6.
 16. The optical imaging lens according to claim 1, wherein asum of the central thicknesses of all five lens elements is representedby ALT, the central thickness of the fourth lens element is representedby T4, and ALT, G3 and T4 satisfy the inequality:ALT/(G3+T4)≤8.8.
 17. The optical imaging lens according to claim 1,wherein the central thickness of the fifth lens element is representedby T5, the central thickness of the first lens element is represented byT1, and T5 and T1 satisfy the inequality:T5/T1≤2.2.
 18. The optical imaging lens according to claim 1, whereinthe central thickness of the third lens element is represented by T3,and T3 and G2 satisfy the inequality:T3/G2≤3.3.
 19. The optical imaging lens according to claim 1, wherein aback focal length of the optical imaging lens, which is defined as thedistance from the image-side surface of the fifth lens element to theimage plane along the optical axis, is represented by BFL, the centralthickness of the third lens element is represented by T3, and BFL and T3satisfy the inequality:BFL/T3≤1.3.
 20. A mobile device, comprising: a housing; and aphotography module positioned in the housing and comprising: an opticalimaging lens, sequentially from an object side to an image side along anoptical axis, comprising a first lens element, an aperture stop, andsecond, third, fourth and fifth lens elements, each of the first,second, third, fourth and fifth lens elements having refracting power,an object-side surface facing toward the object side and an image-sidesurface facing toward the image side and a central thickness definedalong the optical axis, wherein: the image-side surface of the firstlens element comprises a concave portion in a vicinity of the opticalaxis; the image-side surface of the second lens element comprises aconcave portion in a vicinity of a periphery of the second lens element;the object-side surface of the third lens element comprises a concaveportion in a vicinity of the optical axis; the object-side surface ofthe fourth lens element comprises a convex portion in a vicinity of aperiphery of the fourth lens element, and the image-side surface of thefourth lens element a concave portion in a vicinity of the periphery ofthe fourth lens element; the fifth lens element is constructed byplastic material; the optical imaging lens comprises no other lenseshaving refracting power beyond the five lens elements; and a distancebetween the object-side surface of the first lens element and animage-side surface of the fifth lens element along the optical axis isrepresented by TL, an air gap between the second lens element and thethird lens element along the optical axis is represented by G2, an airgap between the third lens element and the fourth lens element along theoptical axis is represented by G3, an air gap between the fourth lenselement and the fifth lens element along the optical axis is representedby G4, and TL, G2, G3 and G4 satisfy the inequality:6.4≤TL/(G2+G3+G4); a lens barrel for positioning the optical imaginglens; a module housing unit for positioning the lens barrel; and animage sensor positioned at the image side of the optical imaging lens.